UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

         Date of Report (Date of earliest event reported) June 21, 2006


                          ONE LIBERTY PROPERTIES, INC.
                          ----------------------------
               (Exact name of Registrant as specified in charter)


       Maryland                   001-09279                     13-3147497
       -------------------------------------------------------------------
       (State or other      (Commission file No.)            (IRS Employer
        jurisdiction of                                          I.D. No.)
         incorporation)


        60 Cutter Mill Road, Suite 303, Great Neck, New York        11021
        -----------------------------------------------------------------
             (Address of principal executive offices)          (Zip code)

                                  516-466-3100
                                  ------------
               Registrant's telephone number, including area code

         Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

        --        Written communications pursuant to Rule 425 under the
Securities Act (17 CFR 230.425)

        --        Soliciting material pursuant to Rule 14a-12 under the Exchange
Act (17 CFR 240.14a-12)

        --        Pre-commencement communications pursuant to Rule 14d-2(b)
under the Exchange Act (17 CFR 240.14d-2(b))

        --        Pre-commencement communications pursuant to Rule 13e-4(c)
under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01.  Other Events.

On June 21, 2006, the registrant issued a press release regarding notification
from the Securities and Exchange Commission of a formal order of investigation.
A copy of the press release is annexed hereto as Exhibit 99.1.

Item 9.01. Financial Statements and Exhibits.

         (a) Financial Statements of Businesses Acquired. Not applicable.

         (b) Pro Forma Financial Information. Not applicable.

         (c) Shell Company Transactions. Not applicable.

         (d) Exhibits.

             99.1   Press release of the registrant issued on June 21, 2006.









Pursuant to the requirements of the Securities Exchange Act of 1934 the
Registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.

                               ONE LIBERTY PROPERTIES, INC.



Date:     June 21, 2006        By:  /s/ David W. Kalish
                               -----------------------------------
                               David W. Kalish
                               Senior Vice President and
                               Chief Financial Officer






                                                            EXHIBIT 99.1


                          ONE LIBERTY PROPERTIES, INC.
                         60 Cutter Mill Road - Suite 303
                           Great Neck, New York 11021
                          www.onelibertyproperties.com

                             Telephone 516.466.3100
                             Telecopier 516.466.3132

                 ONE LIBERTY PROPERTIES RECEIVES NOTIFICATION OF
                        FORMAL INVESTIGATION FROM THE SEC

Great Neck, New York - June 21, 2006 - One Liberty  Properties,  Inc. (NYSE:OLP)
today announced that in connection with an investigation  that commenced in July
2005, at which time the Company  self-reported  to the  Securities  and Exchange
Commission (SEC) that the Company's former president and chief executive officer
had received  improper  payments  from an entity doing  business with one of the
Company's  joint ventures at the time of the payments,  the Company has received
notification  of a formal  order of  investigation  from  the SEC.  The  Company
believes that the matters  being  investigated  relate to the improper  payments
received by its former  president  and chief  executive  officer and also to the
Company's related-party transactions.  As previously disclosed, in July 2005 the
former president and chief executive officer resigned from the Company following
the  Company's  discovery  of the  improper  payments he  received.  The Company
previously  announced  that in July  2005 the  Audit  Committee  of the Board of
Directors and the Audit Committee's  independent law firm, Richards Spears Kibbe
& Orbe LLP,  commenced  an internal  investigation  into the  improper  payments
received by the former president and chief executive officer.

The Company  intends to continue to fully  cooperate  with the SEC and the Audit
Committee of the Company's Board of Directors and its counsel in this matter.

ABOUT ONE LIBERTY PROPERTIES, INC.

One Liberty is a New York-based  REIT that  specializes in the  acquisition  and
ownership of a diverse  portfolio of real estate  properties under long term net
leases.  One Liberty's leases  generally  provide for contractual rent increases
with all operating expenses and most or all other property related expenses paid
by the tenant. For more information on One Liberty,  please visit our website at
www.onelibertyproperties.com.

SAFE HARBOR STATEMENT

Materials  included  in this  filing may  contain  "forward-looking  statements"
within the meaning of the Private Securities Litigation Reform Act of 1995. Such
forward-looking  statements  involve known and unknown risks,  uncertainties and
other factors that could cause actual  results to be materially  different  from
historical  results  or from any  future  results  expressed  or implied by such
forward-looking  statements.  Statements  that include the words "may,"  "will,"
"would," "could," "should," "believes,"  "estimates,"  "projects,"  "potential,"
"expects,"   "plans,"   "anticipates,"   "intends,"   "continues,"   "forecast,"
"designed,"  "goal," or the  negative of those words or other  comparable  words
should be considered uncertain and forward-looking.

Contact: Mark Lundy - 516.466.3100